Metal bolls



9 SheetsSheet I.

0'. B. & W. H. CAMPBELL.

MACHINE FOR GROOV-ING METAL ROLLS.

(No Model.)

, Zia/218103172; WM 3 /M ,ZMM

Z a f Patented Dec. 1, 1885.

(No Model.) 9 Shets-Sheet 2.

G. B. '& W. H. CAMPBELL. MACHINE FOR GROOVING METAL ROLLS.

No." 331,613. Patented Dec. 1, 1885.

L 4 J/fites 6: f Iwrenfbrs- N. we IERS. phntoiilhcgraphur, Washinglall, n. c.

9 Sheets-Sheet 3.

(No Model.)

0. B. & W. H. CAMPBELL.

MACHINE FOR GROOVING METAL ROLLS.

Patented Dec. 1,1885.

m w a (No Model.) 9 Sheets--Sheet 4.

0.. B. & W. H. CAMP BELL.

MACHINE FOR GROOVING METAL ROLLS.

No. 331,613. Patented Dec. 1, 1885 Ik I" (No Model.) 9 Sheets-Sheet 5.

G. B. & W. H. CAMPBELL.

MACHINE FOR GROOVING METAL ROLLS.

Patented Dec. 1, 1885.

\ N PETERSv PhokrLnhngmpher. Washmgiun. 0,0.

(No Model.) shee'ts-sheet 6. G. B. & W. H. CAMPBELL.

MACHINE FOR GROOVING METAL ROLLS. No. 331,613. Patented Dec. 1, 1885.

eff: V Invert/tars:

M QW Q QMW /0 fi/Z 9 Sheets-Sheet 7 (No Model.)

0. B. & W. H. CAMPBELL. MAGHINE'POR GRODVING METAL ROLLS. No. 331,613.

Patented Dec. 1, 1885.

9 sheets -sheet 8.

(No Model.)

0. B. 8: W. H. CAMPBELL.

MACHINE FOR GROOVING METAL ROLLS.

Patented Dec. 1, 1 885.

(No Model.) 9 SheetsShet 9. O. B. 85 W. H. CAMPBELL.

MACHINE FOR GROOVING METAL ROLLS.

No. 331,613. Patented Dec. 1,-1885.

j fifziors Mes a 74M i w. M

N. PETERS, Pholo-Lilhugnphen wmm wn. D c.

UN TE CHARLES B. CAMPBELL AND \VILLIAM H. CAMPBELL, OF BUFFALO, N. Y.

ACHINE FOR GROOVING METAL ROLLS.

SPECIFICATION forming part of Letters Patent No. 331,613, dated December 1, 1885.

Application filed August 29, 1885. Serial No. 175,637. (No model.)

To aZZ whom it may concern:

Be it known that we, GHARLEs B. 0AM]?- BELL and WILLIAM H. CAMPBELL, of Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Machines for Grooving Metal Rolls, which improvement is fully set forth in the following specification, and shown in the accompanying drawings. 7

The object of our invention is to produce a power machine or engine for automatically grooving or corrugating the surfaces of chilled rolls used in flour-milling or for other similar work, means being provided for making the grooves of different depths and grades of fine ness, and for varying the wind or twist of the same, or for making them straight, the parts and devices entering into the construction of the engine being fully described in the following specification, and more particularly pointed out in the claims.

The process of corrugating chilled rolls for A flour-milling with the devices heretofore used has beenslow and expensive, and in our present invention we aim to materially shorten the time and reduce the expense of this operation by increasing the number and changing the form of the grooving tools used, besides making the engine automatic in its operations, so that the least amount of time is lost in shifting the work and adjusting the cutters.

Referring to the drawings, Figure 1, Sheet 1, is a general view of our improved power corrugating-engine, being a front elevation of the same, with a part of the hydraulic cylinder, plunger, worm-gear, and other parts vertically and centrally sectioned, to better show the construction of the same, parts being broken away, and other parts not essential to the figure wholly omitted. Fig. 2, Sheet 2, is a side elevation of the engine, viewed as indicated by arrow 00 in Fig. 1, drawn to further show the devices for operating the escapevalves for the cylinder, the devices for turning the roll on its axis while being corrugated, the means to raise and lower the guide, and other parts of the engine, parts being broken away and other parts omitted. Fig. 3, Sheet 3, is a rear elevation of the engine, viewed from adirection opposite to-that from which Fig. 1 is seen, drawn to further and more fully show the means for turning the roll to give the corrugations a spiral form, and the means for operating the escape-valves of the by draulic cylinder, parts being shown in two positions by full and dotted lines, "and other parts of the machine wholly omitted. Fig. 4,, Sheet 4, is a plan of a portion of the crosshead for holding the tools, drawn to a larger scale, to show more fully the radial tool-holder, the manner in which the grooving-tools surround the body to be corrugated, and the manner of adjusting the tools to the work and withdrawing them from the same during retrograde movements of the machine, parts being broken away and omitted, and one of the posts and a stem of the roll transversely sectioned, as on the dotted line 3 in Fig. 1, the whole being viewed as indicated by arrow 2 in said figure. Fig. 5, Sheet 5, drawn to an enlargedscale, is an elevation of a portion of the right-hand post of the engine and other parts at the right of the center line thereof, viewed in the same direction in which Fig. 1 is seen, drawn to show the manner of forcing water into the cylinder and regulating the operation of the pumps, and to show more fully the devices for withdrawing the grooving-tools from the work and operating the discharge-valves for the cylinder, parts being broken away and omitted, and other parts shown as occupying two positions by full and dotted lines. Fig. 6, Sheet 6, is a plan of the extended flange of the cylinder, forming a bed-plate for the engine, and other parts, viewed in a direction indicated by arrow 00 in Fig. 3, the posts being transversely sectioned, as on the dotted line y therein, drawn to further show the bowed girt or rest for the inclined slide, and other parts of the devices for giving the corrugations a spiral form and indexing the roll, parts not essential to the figure being omitted. Fig. 7 is a plan of the worm-gear,viewed from the same direction from which Fig. 6 is seen, drawn to a much larger scale, for the purpose of better showing the clamp for the roller-stem or workopposing adjusting-screws, and other parts connected therewith,the said stem and vertical thrust-bolts being horizontally sectioned, as on the dotted line y in Fig. 3, parts being shown in two positions of adjustment by full and dotted lines. Fig. 8, Sheet 7, is aview of the lower part of the hydraulic cylinder and parts immediately connected therewith. viewed from the same direction from which Fig. 1 is seen, the cylinder being in part vertically sectioned, as on the broken dotted line at in Fig. 9, one of the exhaust-tubes and parts joining the same being vertically and centrally sectioned on the same line, to better show the construction thereof. Fig. 9 is a transverse section of the cylinder and some other parts, taken as on the dotted line 2 in Fig. 5, and viewed as indicated by the arrow a therein, drawn to more clearly show the arrangement of the exhausttubes, one of the latter being transversely sectioned, as on the dotted line 00 in Fig. 8. Fig

10 is a view of a part of the apparatus for operating the escape -valves of they cylinder, viewed from the direction from which Fig. 2 is seen, drawn to a larger scale, to show more clearly the parts therein represented, parts being shown in two positions by fulland dotted lines. Fig. 11 is a view of some of the parts shown in Fig. 10, drawn in different relative positions, to more clearly show the operation of the same.

Fig. 12 is a plan of the parts shown in Fig. 10, the cylinder, with its stiffeningbrace, being horizontally sectioned, as on the dotted line 2 in Fig. 10, and viewed as indicated by the arrow therein, drawn to further and more fully show the parts and their arrangement. Fig. 13, Sheet 1, is an elevation of a part at the lower end of the guide for the work, viewed in the direction in which Fig. 1 is seen, drawn to a larger scale, to better show the construction of the parts, the contracting-nut being broken away in part to uncover a slit in the guide. Fig. 14 is a view at the end of the same, seen as indicated by arrow in Fig. 13, the upper roller-stem being transversely sectioned, as on the dotted line y in said figure, the yielding parts or jaws at the end of the guide-bar being shown in different positions by full and dotted lines. Fig. 15, Sheet 4, is a side elevation of the seg; ment arm or rocker forwithdrawing the cutters from the work, viewed as indicated by arrow 00* in Fig. 4, said arm being shown in its positions at either end of its throw by full and dotted lines. Fig. 16 is a plan of the radial tool-holder shown in part in, Fig. 4, drawn to a smaller scale, to show the relation between the radial cutters or corrugatingtools and the body being operated upon, a part of the cap-plate being broken away to uncover parts beneath. Fig. 17 is a view from the same direction of the tool-rest and the cross brace or lintel at the top of the posts, drawn to show the relative positions of said parts, with the guide-bar, rack, and pinion, and other parts. Fig. 18, Sheet 8, shows, drawn to a much larger seale,a tool-stock and cutter, with the means for delicately adjusting the latter to its work, parts being horizontally and centrally sectioned,as on the dotted line y in Fig.

. 20, showing better the form of the cutter and its relation to the roll. Fig. 19 is a side elevation of the same,with the cap-plate, slotted ring, and other parts added, viewed as indicated by arrow 2 in Fig. 18,the tool-stock and other contiguous parts being vertically sectioned, as on the dotted line 00 in Fig. 20, the tool-stock, with its tool or cutter and adjusting devices, being shown in two positions of horizontal adjustment by full and dotted lines; Fig. 20,an elevation of the part shown in Fig. l9,viewed as indicated by arrow y? in saidlatter figure, a part of the slotted ring being broken away to uncover the friction-bushing of the adjusting-stud for the tool. Fig. 21 is a view of a portion of the cross-head,with the slotted ring, tool stock, gib-slide, and other contiguous parts,viewed in the direction indicated by arrow 2 in Fig. 4, Sheet 4, parts being vertically sectioned, as on the dotted line 00 therein, drawn to show more fully the form of the gib-slide and its fastenings andthe parts connected therewith. Fig. 22 is a view from overhead of a portion of the flange of the cylinder or bed-plate of the engine, with the shafts and other parts for pumping mounted thereon,a post being shown transversely sectioned,

as on the dotted line y in Fig. 5,Sheet 5. Fig.

23 is a View at the end ofone of the tool-stocks, with the cutting-tool secured in place, viewed as indicated by arrow 2' in Fig. 19, showing the form .of the grooving-teeth of said cutter. Fig. 24 is a view of the face of acutter turned against or contiguous to the tool-stoek,drawn to show more fully the circular groove and transverse tongue thereof; and Fig. 25,a view of aportion of one end of a tool-stock, seen as indicated by arrow 00 in Fig. 19, showing the seat for the cutter and the corresponding circular tongue and transverse groove made to fit the groove and tongue of the cutter just mentioned; Fig. 26, Sheet 2, a side elevation of the indexing-wheel and combined parts, drawn to a larger scale, showing the manner in which the parts are operated by the lever coming in contact with the pin of the indexingrod, as said parts are carried upward by the plunger, parts being shown in two positions by full and dotted lines; Fig. 27, a similar view of some of the same parts, showing in dotted lines the indexing-wheel as having been carried farther upward by the plunger, resulting in the bending downward of thejointed lever against the action of the lifting-spring; Fig. 28, a view of some of the parts shown in Fig. 26, viewed as indicated by arrow y in said latter figure, drawn to further show the jointed lever and spring operating the same; Fig. 29, a View of the jointed lever, pawl, and ratchet shown in Fig. 26,viewed from the opposite direction from which said latter figure is seen, drawn to more fully show the stopscrew that serves to regulate the throw of the pawl as it acts upon the teeth of the ratchet; Fig. 30, Sheet 9, an elevation of. some of the devices for shifting the clutch for driving the force-pumps, viewed in the direction indicated by arrow 2 on Sheet 5, drawn to a larger scale, to show the bell-crank of the shifting device and its relation with the V- headed spring-bolt and other parts of the clutch-shifter; Fig. 31, a view of some of the parts shown in Fig. 30,viewed in the direction indicated by arrow a in said latter figure, serving to further show the relation between the VS of the bell-crank and spring-bolt, the former being transversely sectioned, as on the dotted line g in said Fig. 30, and the foot of the shifting-fork being centrally sectioned at one end, as upon the dotted line a in Fig. 30, to show the slot therein. Fig. 32 shows the \l-heads of the bell-crank and spring-bolt in a position which they assume at each movement of the former, viewed as Fig. 31 is seen; Fig. 33, a view of the parts of the clutchshifting device shown in Fig. 31, and viewed in the same direction, the V-heads being in a different relative position, with the clutches thereof apart; Fig. 34, a plan of the parts shown in Fig. 30, viewed as indicated by the arrow y", drawn to further show the relation of some of the parts, the long arm of the bellcrank being shown as reaching to a point near the plunger. Fig. 35, Sheet 4, is a section of the slotted ring and tool-holder,taken upon the dotted line a in Fig. 4, and viewed as indicated by the arrow, drawn to better show the relation of said parts; Fig. 36, Sheet 3, a view, drawn to a larger scale, of the head of one of the thrust-bolts and parts associated therewith shown in the adjacent figure, for urging the roll upward, the cap of the bolt being vertically and centrally sectioned, to better showits form; Fig. 37, Sheet 1, aview of the roll with its stems driven into place, the roll beingin part centrally and longitudinally sectioned,to show the parts of the stems fitted therein; and Fig. 38, Sheet 4, a modification of the manner of connecting the screwshaft and slotted ring.

In preparing flour-milling rolls they are first cast with chilled surfaces, then bored longitudinally and centrally at the ends to receive steel stems H, as shown in Fig. 37, Sheet 1, which stems are closely fitted and permanently driven to their places in the rolls under a powerful press. The whole is then truly turned in a lathe, and in the subsequent process of corrugation the stems are grasped by suitable holders, firmly holding the roll in a vertical position, as clearly shown in Fig. 1.

Referring to the parts, A is a cylinder-piece or cylinder formed with a cylinder proper, O, and a broad rectangular flange, A, at the upper end thereof, having four stout braces,

- G, which extend to said flange for strengthening it, and are arranged longitudinally ninety degrees apart around the cylinder 0, said cylinder O, flange, and braces being all cast in one piece, and together constituting the cylinder-piece A 13 are four supports for the cylinder, one placed at each corner of the flange and resting upon solid foundations F, of masonry, about level with the floor, part of the cylinder pending in the pit D, between the foundationwalls, as shown in Fig. 1. The plan of the flange of the cylinder is at right angles with the axis of the bore, said bore opening out at the surface of the flange, and when resting upon the supports B the axis of the cylinder is vertical.

I are two similar and equal vertical posts or supports based, respectively, at the middle of the ends of the flange of the cylinder, to which they are firmly bolted.

K is a cross brace or lintel secured rigidly at the upper ends of the posts, which, together with the posts and cylinder, forms a rigid frame for supporting other parts of the engine.

L is a horizontal cross-head or tool-frame reaching across between the posts, formed with broad bearingsurfaces P at its ends, fitted to the parallel parts N of the posts, to be adjusted vertically along the same.

0 is a vertical guide-shaft for the work as it moves upward or downward, fitted to slide through the bore of the central hub, R, of the lintel as a guide, the lower end of which shaft is bored out for the purpose of receiving and holding within it the upper stem of the roll or body to be corrugated.

S is a plunger closely fitted to the bore of the cylinder-piece, projecting out at the open end or mouth of the same, and provided with a lateral flange or head, T, at its upper projecting end, overlapping the flange of the cylinder.

A is a worm-gear of the indexing device 0 resting, by means of a shoulder or bearing, a, upon the head T of the plunger, said gear being formed with a sleeve or long hub, B, reaching down into a cavity, 12, formed in the plunger, the said gear and the sleeve being fitted to turn as with a journal-bearing upon and within the plunger.

The wornrgear is formed with a cavity, 0, extending centrally through the hub or sleeve,

within which is fitted a concentric ring, d,

which receives within its bore the lower stem of the roll, as shown. The bores of the cylinder, plunger, worm-gear, and ring (I are all concentric and nicely fitted together, the axes of all coinciding with the axis of the roll and its stems and the axis of the shaft 0, and when water is forced into the cylinder below the plunger, by means hereinafter set forth, the latter, with the parts above it, is carried upward truly along said axial line, the same being the axial line of the engine.

The crosshead L is formed with a large central cavity, T concentric with the axis of the engine, and supports an annular toolholder, A formed with equally-spaced races or rests p, in which to receive tools B Referring more particularly to Sheet 8, G are steel prismatic bodies or stocks, to which the grooving-cuttersf are secured, said stocks being rectangular in cross-section, so as not to turn in their hearings or seats. The steel cutters fare let into the lower faces of the and. held in place by one or more bolts, Circular grooves 0, formed in the sides of the cutters, Fig. 24, and fitted by corresponding tongues, t, of the stocks, Fig. 25, serve to holdsaid cutters more firmly and truly in their seats upon their respective stocks. Tongues 12, also projecting from the faces of the cutters into corresponding grooves, 0, formed in the stocks, serve the same purpose. These stocks are truly planed or finished upon their four respective faces to a uniform size, and fitted in radial tool races or seats p, formed in the annular tool -holder A". (Better shown on Sheet 4, Figs. 4 and 16.) By this means the cutters are held to encircle the roll, being equally spaced therearound,with the scalloped cutting edges or noses of the cutters presented to the chilled surface of the same. When the roll is carried slowly upward by the rising plunger, as above stated, it is forced through this circle of cutters, and longitudinal grooves are formed in its convex surface. The roll is carried by the action of the plunger to some distance above the cutters, as indicated by dotted position on Sheet 5, when the flow of water into the cylinder is stopped and outflow or exhaust valves, hereinafter described, opened to allow the water to escape, to permit the plunger, with the roll and other parts, to descend by gravity to the points from which they started. The roll and index 0 are conneeted, so that if the latter be turned the roll will move also, on account of which the latter may be set for a new cut at each return movement of the plunger.

In Fig. 7, Sheet 6, 7c is a simple clamp split out at one side, at Z, and bored to receive a stem of the roll, when the latter is put in place in the engine. A clamp-bolt, p, crossing the slit. at right angles, serves to draw the divided parts together and cause the clamp to firmly pinch the stem of the roll. Horizontal adjusting screws 15, threaded within rigid studs 10, rising from the worm-gear, have their respective points bearing against extended partso of the clamp. By means of the clamp the cylinder and worm-gear are held to turn together, and on account of the adjustingscrews the roll may at pleasure be turned to a limited extent independent of the gear in making axial adjustments of the roll necessary in the operation of eorrugating the same.

r is a worm held to rotate in bearings a, rigid with the flange T of the plunger, with its spirals engaging the teeth of the gear. The worm is provided with a long stem or shaft. 8, supported at its outer end by an arm, 0 extending out from the plunger, at the outer end of which stem is secured a ratchet-wheel, b, and pawl-lever is, carrying a pawl, a, to act upon the teeth of the ratchet, the last- .named parts being more clearly shown in the various figures of Sheet 2.

Horizontal pins (1 and d Sheets 2 and 3, are held, by means hereinafter described, in positions to be encountered by the lever of the index as the latter reaches its uppermost and lowermost positions by the vertical movements of the plunger above described. By means of these pins the lever is alternately moved upward and downward, causing the pawl to turn the ratchet, and thus shift the roll for anew cut at each descent of the same.

The indexing of the roll, or the distance it is turned upon its axis at each advance movement of the pawl, is regulated for coarser or finer corrugations by forming a joint, 0, in the pawl-lever, and providing an adjustable stop device for the latter. The stop shown is a threaded bolt, 9, passing through a lug, e, projecting from the pawl-lever in position to have its point encounter a rigid stud, h, of the flange of the plunger when the lever is carried downward by gravity, or by encountering the pin d, above mentioned. If the point of the bolt touch the stud before the pin 11 ceases its action upon the pawl-lever, the latter will, on account of itsjoint, yield to the pin, as shown, during which time the pawl will remain inactive, the action of the pin d upon the lever being effective only until the motion of the latter is stopped, as stated.

The bolt 9 may be adjusted endwise in the lug 6, so as to encounter the stud sooner orlater in the movement of the lever, allowing the point of the pawl to cover more or fewer teeth of the ratchet at each movement, the roll F being indexed or turned upon. its axis to a greater or less extent, according to the number of teeth passed over by the pawl. A nut, a, threaded upon the bolt 9 and turned tightly up against the faces of the lug e,serves to hold the bolt firmly in any position of adjustment given it. A fiat spring, 03, secured to the main part of the pawl-lever and pressing against a projection, Z, of the outer jointed end, f, of the same, tends to keep said part f in the relative position shown in full lines in the figures, and when the part f of the lever is bent downward by the pin (1?, as above described, it isdone against the action of the spring.

IIO

' Instead of a single ratchet, a nest of differential ratehets may be employed, if found convenient, in indexing the rolls for corrugations of different numbers or fineness, each having a pawl to operate it.

If after the roll is put in position for a cut it be carried straight upward between the cutters, the corrugations will be straight and truly longitudinal, but by slowly turning the roll upon its axis while moving upward the end the guide is provided with ahead, L, held by a bolt, 1), Sheet 6, to a rest or girt, N, se-

cured to the posts, as shown, said bolt passing through a circular slot, t, in the rest and entering the head. By means of the slot and pivotblock H the guide, when the bolt 9 is loosened, may be swung at its upper end in a vertical plane to occupy a vertical position, as indicated by dotted lines; or it may be inclined more or less to the right of a vertical, as shown, the bolt p serving to clamp it firmly against the rest in any position of adjustment. The plane of the axis of the guide is at all times parallel to the axial line of the engine, a portion, 22, at the middle of the rest for the same, being made straight to carry truly the upper end of the guide in its lateral movements. A part, 0, held to slide along the twist-bar or guide, reaches out from the flange of the plunger, and is formed to have a pivotal motion in a vertical plane. Now, it will be understood that if the guide be held in an inclined position the plunger, worm-gear, roll, and other parts will be turned slowly upon their aXes as they are carried upward, giving to the corrugations made on the roll a spiral form; and it will be plain that the degree of the twist or wind given the corrugations will depend upon the obliquity of the guide, and that if the latter occupy a vertical position no wind or twist will be given said corrugations.

The part 0 is permitted to, turn as it moves upward or downward along the guide G by being secured to a simple sleeve, P, Fig. 6. Sheet 6, fitted to turn upon. astud, 6 secured rigidly to the plunger.

Parallel arms I) and b Sheets 2 and 3, projecting, respectively, from the upper head of the guide G and the pivot-block, hold at their extreme ends a rod, f parallel with said guide, upon which are secured the pins cl and d ,for operating the pawl-lever 7c of the indexer 0 above described. These pins are secured to the rod f by means of set-screws, or otherwise, to be adjustable upward and downward thereon, so that the indexer may be timely operated for corrugating rolls of different lengths. The rod f may be round, square, or of other form of cross-section, square being thought to be best with gibs under the points of the setscrews.

As above stated, the shaft 0 is fitted to slide as with a journal-fit through the guide R of the frame. A rack, g, and pinion h Sheets 3 and 4, are provided for the shaft, by means of which to raise or lower the latter by hand, the pinion being secured to a horizontal shaft, R, provided with a hand-wheel, S, and resting in bearings and Z upon the lintel or frame. The rack is longitudinally concaved upon its rear surface, so as to fit the convexity of the shaft, being confined endwise between collars 0 and 0 secured rigidly thereto. By this manner of fitting theparts the shaft is permitted to turn upon its axis in the guide or'bearing R independently of the rack, and to slide with the rack vertically through the guide, a space, r, being formed in the lintel back of the pinion, in which to receive the rack.

As above stated, the lower end of the shaft is formed with a longitudinal concentric chamber, a, Sheet 1, for the purpose of receiving a stem of the roll, the shell or wall surrounding the chamber being divided into parts or jaws d by longitudinal slits s.

For a short distance from the end the shaft 0 on its outer surface is tapered and formed with ascrew-thread, t upon the tapered part, to which is fitted an internally-threaded ringnut, T, as shown in Fig. 13, the same being also internally tapered to fit the taper of the shaft. On account of this construction the jaws d will be contracted at their free ends by turning the ring-nut upward upon the said shaft. The diameter of the cavity a is just sufficient to receive a stem of the roll, and the nut T, when turned upward, causes the jaws to firmly pinch the stem. When the roll-carrying shaft 0 is thus firmly clamped upon the stem of the roll, it moves up and down with the roll, and likewise turns with it during the operation of corrugating the same.

The work of corrugating mill-rolls has to be very accurately and carefully performed, on accountof which each cutter needs to beheld so that it may be finely and exactly adjusted to its work, and also held rigid and unyielding while cutting. Besides, during each descent or retrograde movement of the roll, the cutters have to be drawn slightly back therefrom to preventinjury to both cutters and rolls. As has been already stated, the cutters are secured to prismatic stocks 0, Sheet 8, fitted in radial races 19 Sheet 4., formed in the annular toolholder A which latterlies in a horizontal position upon the tool-frame L and is firmly bolted thereto. The roll moves up and down through the central opening of the tool-holder in a line at right angles to the plane of the latter and concentric therewith, the grooving-tools all pointing radially toward the roll.

The tool-holder consists of an annular plate, B, formed with overhanging sectoral blocks 0 of one piece with the ring, between which blocks the tools rest, and a ring, D firmly secured to the sectors by bolt f concentric with the plate B covers said tool-stocks or tools. Within the races p thus formed the tool-stocks move endwise to carry the cutters to and from the work. Under the overhanging ends of the sectors G and outside of the ring 13, is fitted another ring, F, formed with a slot, 0 under each race p. This ring F is made slightly thinner than the ring B, so that when the latter is secured in place upon the tool -frame, as stated, the former will turn freely but snugly around upon its bearing upon the ring B, and between the overhanging sectors and uppersuriace of the cross-head or tool-frame L. The slots 0* are substantially circular, but not concentric with the ring, one end of each being purposely near the outer periphery and the other near the inner pe riphery of said ring. Each tool-stock is provided with a downward-projecting stud, a, (morefully described hereinafter,) in position to enter the slot when the tool-stocks are put to place in the races, said studs being each provided with a friction-bushing, e, to reduce the friction between them and the ring as the latter is moved.

From the obliquity of the slots 0 in the ring it will be seen that if the latter be turned in the direction indicated by arrow 2 the tools will be urged inward toward the roll, and if turned in the opposite direction they will be drawn away from the roll, the sides of the slots acting as cams upon the pins or studs of the tool-stocks. By this means a slight turning of the ring F one way or the other upon its bearings serves to move all the cuttersequally and simultaneously toward orfrom the work, as the case may be. The ring may be turned by means of atangent-screw (shown in Fig. 88) or other device; but we prefer to move it by a toothed rack and other means, as follows: G Sheets 4 and 8, is a dovetail slide, fitted with a gib, H in a groove, 1

formed horizontally and transversely in the crosshead L. At its ends the slide is formed with two short standards, iKwhich form bearings for a horizontal screw-shaft, of, the same being provided with an overhanging handwheel, 1.

a is a prismatic tangent-block bored longitudinally, and internally threaded to receive the screw-shaft, said block occupying the space between the standards 2' of the slide opposite the edge of the ring F Upon its vertical face, turned toward the ring, the tangent-block is provided with transverse gearteeth 8 which engagesimilar teeth formed upon the periphery of the ring, as shown, from which it will be seen that by turning the hand-wheel r the slotted ring will be moved upon its bearing with the'tool-holder and tool-frame, causing the cutters to approach or rccede from the roll, as the case may be.

The block a is preferably formed with longitudinal depressions o in its upper and lower surfaces, in which to receive guides a and a to steady its movements, said guide a being a bar secured to the standards 6 of the slide, and the guide a being a simple upward-projecting part of the slide. This furnishes a means by which the cutters may be moved or adjusted by hand; but it is also desirable to have them moved automatically to and from the work,to correspond to other automatic operations of the engine.

To move the tools automatically, we employ a segment arm or rocker, g pivoted at c to a part, P, of the tool-frame. (Shown on Sheets 4 and 5.) This rocker is formed with a pin, a, projecting horizontally outwardto a position to be encountered and carried upward by a projection, h from the plunger when the latter is at its upper position. (Indicated by dotted lines.) The rocker is also formed with peripheral gear-teeth 2' which engage with a screw-thread throughout its bore, half of the distance (from one end to the middle) the thread being right-hand and the other half a left-hand thread, each preferably of equal lead.

Studs e and 0 of equal diameter, are secured rigidly, respectively, to an arm, 10 rigid with the tool-frame L and one end of the slide G the axes of the studs being in the same horizontal line. These studs are externally threaded-one with a right-hand thread and the other with a left-hand threadto fit the threads of the pinion, which latter is screwed onto the studs, as shown. From this combination of parts it will be understood that by turning the pinion one way or the other the studs e and 0 will be caused to recede from or approach each other, as the case may be, causing the slide G with the toothed block if, to move longitudinally within its bearing in the tool-frame. A longitudinal movement of the slide in either direction will cause the slotted ring to turn in a corresponding direction and move the tools to or from the roll,

as above stated, which is effected automatic' ally by the action of the plunger in moving the segment arm or rocker above mentioned. The parts are so arranged that when the plunger moves upward its action upon the rocker draws the tools back from the roll, as indicated by dotted position in Fig. 19, Sheet 8, after the roll has passed above said cutters, to the position indicated by dotted lines on Sheet 5.

The cutters remain thus withdrawn from the work until the plunger descends to its lowest position,when it moves the rocker in the opposite direction, by means described further on, and again brings the tools in position to act upon the roll, when the latter is carried upward by another ascent of the plunger. By this means the tools are withdrawn automatically out of the way of the roll during its descent, and presented to act upon the surface of the roll when it moves upward.

By means of the handwheel 1* the cutters may be moved as a unit toward or from the roll at will, as above stated, and when left at any position of adjustment relative to the roll said cutters will be returned to that exact position at each forward movement thereof caused by the action of the rocker-that is to say, if the noses of the cutters are adjusted by the hand-wh eel to just touch, for instance, the surface of the roll as the latter passes up through them, and they are then left to the action of the rocker, they will be brought by the latter to just touch the roll at each forward movement given them by the rocker. This is an important feature of the invention, as will be presently understood.

In order that the cutting-edges of the tools maybe brought back to the roll each time with great precision, which is necessary after being drawn back to clear the latter in its descent, the pinion k (see Sheet 4.) must cease turning at the same exact point each time, and with positive means. The leads of the threaded studs 6 and are such that a halfrotation of the pinion is sufficient to draw the cutters sufficiently far from the roll to safely clear the latter as it descends. W'e form the pinion with teeth only a part of the way around, and to stop its turning with exactness each time it moves, particularly when the cutters are brought to the roll, we provide it with tangential bars or stops a on sides diametrically opposite, and provide the rocker with similar stops, d, to meet the stops of the pinion, as shown. The outward-turned faces of the stops of the pinion are slightly concaved, and the peripheral faces of the stops of the rocker are made slightly convex to meet the concavity of the pinion-stops, the outer faces or bearing-surfaces of the stops of the segment-arm being made to conform to the pitch-circles of the teeth thereof. The stops of the pinion and rocker are formed so as to meet and lap upon each other harmoniously as said pinion and rocker turn together, the pinion ceasing to rotate the instant the stops fairly coincide throughout their length in any given case. A continued motion of the rocker at either end of its throw,

after the stops are brought thus together,

would result in no further motion of the pinion, the stops merely sliding upon each other. This causes the motions of the pinion and of the cutters to be that of precision and exact ness, while the movements of the rocker may be more or less variable or indefinite from the indefinite motion of the plunger.

Besides the adjustment of the tools by the handwheel and the automatic movement of the same by the rocker, it is desirable to give to each an independent adjustment, so that all may be brought to bear alike upon the surface of the roll. To effect this,we form vertical rectangular cavities Z Sheet 8, inthe respective tool-stocks, in which to receive the square heads i of the studs a as shown. These heads fill the cavities laterally, fitting the side walls thereof; but space is left in front and in rear of the heads to allow a longitudinal motion of each tool-stock independent of its stud. An externally-threaded sleeve, W, of comparatively large diameter, is fitted to an internally-threaded horizontal opening through the rear wall, 8, of the cavity Z having its fiat inner end bearing against the rear face of the head of the stud, its outer end being squared to receive a wrench. This screw is bored 1ongitudinally to receive another screw, uiwhich passes through the former, and the head of the stud being threaded in the latter. Outside of the sleeve-screw r the screw a is formed with a collar, 0 and a squared head, 1)", upon which to receive a wrench. Now, by turning the screw a the head of the stud may be brought firmly against the point of the sleevescrew in any position of adjustment of the latter in the tool-stock, and when thus firmly held the tool-stock and stud or become rigidly joined. From this manner of fastening the respective studs and tool-stocks together it will be seen that either tool of the series maybe at any time independently adjusted.

When this engine is used where there is a system of water-works, a pipe-connection may be made therefrom with the cylinder, by means of which the plunger may be carried upward, as stated; but we prefer to make the machine complete within itself, and for that purpose add to it asystem of force-pumps, K Sheets 5 and 8, with which to fill the cylinder, and a system of outletvalves, L Sheets 1 and 7, with which to exhaust the same, supplying devices or means by which said pumps and exhaustvalves may be worked and controlled automatically.

(1, Sheet 8, is a shaft for driving the pumps, being provided at one end with asteppulley, N and at the other with a pinion, c, said shaft resting in standards f rising from the flange A of the cylinder.

g is a similar parallel shaft resting in the same standards and provided with a gear, 6, operating with the pinion a, said shaft being further provided with eccentrics h, for operating the pumps. A series of small pump-cylinders, K are secured at the under surface of the flange A below the eccentrics, and jointed rods i extend from the eccentrics to the plungers of the pump-cylinders, by means ofwhich the latter are operated. A pipe, connected with the series of pumps, leads to the interior of the cylinder,near the bottom thereof, below the plunger, by means of which apparatus the cylinder may be filled and the plunger forced upward, for the purpose above set forth.

It is designed to have the shaft d continually running, by means of a belt on the steppulley, during the operation of the machine, the inconvenience of starting and stopping the same, as the pumps need to be operated by shifting the driving'belt, being thus avoided.

During the descent of the plunger the pumps need to be stopped and slarted again when the plunger is down, to effect which we provide the shaft d with the sliding clutch Z, in position to engage the teeth of the hub of the pinion, the latter being made to turn loosely upon the shaft. The clutch we operate automatically by the following means:

0 Sheet 9, is a shifter for the cluteh,forked at its upper end and fitted in a groove, a", of the elutch,the shifter being formed to rest and slide upon the flange A of the cylinder, and held thereto by bolts 1*, passing through slots 8' in the same. These slots are of sufficient length to allow the shifter to move either way far enough to throw the clutch out of and in gear,as stated. The shifter is formed with two opposing lateral projections, 0, which form bearings for a vertical sliding bolt, 26*. At its lower end the sliding bolt is formed with a V- head, a, being provided also with a rigid 001- I and closed with reference to the action of the lar, a and spiral spring 12 between said collar and upper bearing, the tendency of which spring being to hold the bolt down, with its collar resting upon the lower hearing, as shown in Fig. 31. Beneath the V-head of the bolt is an opposing V-head, 0 which V-heads engage each other, as shown, the V-head being formed at the end of a bell-crank, (Z resting in a bearing, f, of a standard, P secured to the flange A. formed with a horizontal arm, 9 reaching out toward the flange T of the plunger, by means of which said bell-crank is rocked in its bearfrom the pinion, as shown.

ally rotate.

ing in the standard, as hereinafter more fully described, causing the V-head thereofto swing under the V-head of the bolt.

' I By observing Fig. 31 it will be understood that if' the head 0 of the bell-crank be urged in the direction indicated by the arrow it will crowd the bolt t upward against the action of the spring, but no motion of the clutch-shifter will result until the V-heads reach the relative positions shown in Fig. 32, in which the edges are presented to each other. tion of the lower head be slightly continued, the spring will quickly force the upper head, it, down on the opposite side of the lower head to the position shown in Fig. 33, which action of the spring will cause the clutchshifter to slide along its bearing on the flange A, in the direction indicated by the arrow in said latter figure, carrying the clutch away A contrary mo tion of the head 0 will now cause the bolt to rise', as before, and throw the head of'the latter over on the other side of the head 0 causing the clutch-shifter to lock the clutches together, as before. I By this means the clutch is thrown out or in, resulting in the stopping or starting of the pumps at intervals, while said clutch and shaft carrying it continu- This sudden or quick movement of the clutch in each direction by means of the spring and V-heads, while the bell-crank is moved slowly and indefinitely by the plunger, is desirable, and an important feature of our invention, as a slow movement of the clutch would be impracticable. At its outer end the arm of the bell-crank is prdvided with a pin, 6, which stands in position to be encountered by the projection if of the flange of the plunger, said projection having been I above described as operating the rocker by the roll,as above described.

The outlet or discharge valves for the water in the hydraulic cylinder have to be opened The bell-crank is ing, 9 in said brace.

If, now, the mo-v When the projection h, in the down-,

pumps and plunger, being closed when the pumps are operating and while the plunger is moving upward, and opened when the pumps are stopped, to allow the plunger to descend, which opening and closing of said valves is effected by means of the projection 7L3 of the plunger-flange as it acts upon the rocker and the arm of the clutch-shifting device, as described above.

n Sheets 2 and 7, is a lever fulcrumed to swing in a vertical plane upon a pin, 0 held by a hanger, secured to a brace, G, of the cylinder, said lever passing through an open- The right hand end of this lever, as appearing in the figures, is made circular and provided with gear-teeth, which engage similar teeth of a vertical rack, Z, fitted to slide in a guide, 19 secured to the flange A. The reciprocating rod h connecting the rocker and arm operating the clutchshifter,passes downward from the arm through the flange A and connects with the rack P, as shown, by means of which rod the lever n is caused to swing in a vertical plane upon its pivot. At the left-hand end, Fig. 11, the lever is expanded, made circular, and provided with a yielding spear-head. r fitted to slide longitudinally thereon. The spear-head or sliding block W is slotted at 8 through which a headed stud, t passes, being secured rigidly in the lever, which forms a" guide or stud along which the spearhead may slide. The spearhead is formed with a projection, u opposite a similar projection, a, of the lever M, which together hold a rod 1), upon which is coiled a spiral spring, 0 The rod is made rigid in the projection a, and fitted to slide through the projection or hearing a, on account of which, if the'spear-head be urged backward, the spring will be compressed between the projections a and a, and tend to restore said spear-head to its normal place on the lever.

d is a cross-head fitted to move vertically between slides f, secured to a brace of the cylinder, in position relative to the spearhead to have the latter act upon a horizontal pin, i, thereof. From the lower end of the crosshead a rod, h", extends downward, and is connected with the valve-lever 70, Fig. 8. (See also Sheet 3.) The action of the spear-head is similar to that of the V-head of the spring-bolt of the clutch-shifting device above described. The inclined edges of the spear-head that bear upon the pin 2' are designed to be made hard, and the pin supplied with a hardened friction bushing or sleeve for the spear to bear against, for the purpose of decreasing theiriction and wear of the parts.

Regarding Fig. 10, if the rack Z be moved upward, the spear-head, from being urged against the pin 13, will move backward along its bearing on the lever n against the action of the spring, until it reaches the position shown in Fig. 11. Up to this stage of the movement of the spear-head no motion of the cross-head or valves will result; but as the ing shown in the figures. The plate or head point of the spear-head passes the pin the spring will quickly force it outward beneath the pin to the position shown in dotted lines, causing the pin to glide upward along its upper surface, e raising the cross-head to the position shown in dotted lines. This action of the spear-head will cause the outflow-valves of the cylinder to be opened, as will be presently specified. A downward movement of the rack Z causes an upward movement of the spear-head, which, as its point passes the pin, depresses the cross-head, serving to close the valves, the parts then occupying the positions shown in full lines. It will be observed that although a is a lever of the first order, on account of the construction of the parts the rod h will move in the same direction in which the rod 7L5 moves.

The vertical movements of the cross-head are regulated as to distance by means of lateral projections u thereof, Sheet 5, encountering rigid studs o reaching out from the respective slides f These studs may be located to stop the crosshcad at any point de sirable in its vertical movements, so as to regulate the distance which the tubesp move in the sleeve-tubes 1 above mentioned, it being necessary for the former tubes to move only sufficiently far downward to uncover the openings at of the sleeve-tubes. The lower studs need to be located so the ends of the inner tubes wil1,surely press against the packing-pads of the sleeve-tubes before the projections of the crosshead touch them, their use being mainly to prevent the ends of the tubes being forced too firmly against the pads, which might injure the same.

Any valves to let the water out of the cylinder for the purpose of allowing the plunger to descend that are sufficiently tight and prompt in action will serve the purpose of this machine; but we prefer the system of valves L (Shown more fully in Figs. 8 and 9 of Sheet 7 These valves consist of tubes Z, passed vertically through the bottom plate of the cylinder, and fitted therein by means ofscrew-t-hreads, said tubes being closed at their inner ends and formed with side openings, a through which the water may flow outward from the cylinder, as indicated by the arrows.

p are other tubes, open at both ends, telescoped within the outer or sleeve tube, 1, the former tubes being secured to a horizontal plate or head, 0, below the cylinder, said tubes passing through the head and opening out below the same. A cupshaped packing box, r, is fitted by means of serew-threads to each of the sleeve tubes Z", in position to press rings of packing a against the ends thereof, and around the inner tubes, to prevent water escaping between them. The n pperinner ends of the tubes Z are provided with fiat packingpads 0 against which the flat or straight ends of the inner tubes are pressed to prevent the outflow of water. Any number of these sets of tubes desirable may be employed, four be- 0 holding the inner tubes, rests upon the end of a lever, is, at the other end of which lever the rod h, leading from the cross-head cl, is attached. The plate and lever are connected in a movable joint by a pin, If, so that the lever may rock freely thereon in its vertical vibrations, the said lever being fulcrumed at 1) upon a pin projecting from ahanger, (1 secured to a brace of the cylinder.

From the above it will be understood that when the cross-head or valve-opening slide d is forced downward by the spear-head the valves of the cylinder will close and the outflowing of the water therefrom stop, and when the cross-h ead is lifted the valves will be opened and the plunger permitted to descend. Thus the projection h from the flange of the plunger,coming in contact alternately with the pin 11 of the segment'arm and pin 6 of the arm of the bell-crank,serves to adjust the cutters, stop and start the pumps, and open and close the valves.

To assist to hold the roll in exact line and concentric with the cutters during its upward movement, so the grooves shall be of uniform depth all around the same, rigid guides 6 Sheets 4 and 5, are secured to the under surface of the tool-frame L, with their inner ends bearing against said roll. These guides may be of any suitable form, having bearing-surfaces sufficiently broad in contact with the roll, and being made horizontally adjustable upon the to0l-frame by means of slots f, or otherwise adapted to be used when rolls of different diameters are being corrugated. Three or more of these guides may be employed, they being distributedequally around the circumference of the roll.

The parts P of the tool-frame are clamped firmly to the posts I by means of bolts 9 to enable said tool-frame to withstand the upward thrust of the roll as it is driven through the cutters by the plunger. To prevent the cross-head or tool-frame bending, from the strain brought against it by the upward-moving roll, we provide vertical brace-rods R Sheets 1 and 3, fitted within hubs h of the lintel, which may at any time be brought to bear upon the cap-ring D",for the purpose of sustaining said cross-head against the strain. These bracerods or supports are fitted to slide vertically within the hubs, set-screws '5 serving to clamp or hold them in position of vertical adjustment given them. At their lower ends they are bored outlongitudinally, internal] y threaded, and provided with threaded bolts k having pointed heads Z ,to bear upon the cap-ring of the toolholder. By means of these bolts, after the supports are brought down to place, a

heavy pressure may be brought to bear upon said cap-ring. Jam-nuts n are provided for the'bolts k by means of which the latter are firmly held to place when they are adjusted to the cap-ring, as stated.

The upward movement of the plunger is communicated to the roll by means of thrustbolts 0, threaded vertically in the studs or I the preceding tooth left it, the teeth '0 at each holders to, above mentioned, rising from the worm'gear. These bolts are made with pointed heads 19 (Fig. 36, drawn to a larger scale,) similar to the heads of the bolts of the supports R and provided with similar jam-nuts, a, to hold them rigidly to place in different positions of adjustment. The strain brought to bear upon these thrustbolts is sometimes very great, on account of which we prefer to provide them with caps 17, hollowed to receive the points, which caps serve to distribute the pressure against the roll over a greater surface.

Referring to Fig. 18, Sheet 8, it will be seen that the points or noses of the cutters are scalloped or formed with a series of equal projections, 8 These projections are accurately made of the size the grooves are to be formed in the roll in cross-sectionthat is, they are spaced as the said grooves are to be indexed, so as to uniformly and evenly corrugate the convex surface of the roll. These projections or teeth of the cutters are not made in astraight line for each cutter, but formed so thata horizontal line drawn tangent to each of them would be curved with its upper end, as appearing in the figure, nearer the roll. From this it will be seen that the uppermost tooth or projection, u of the cutter will mark the roll first as said cutter is brought toward the roll by means of the hand-wheel W, as above described.

The teeth of a cutter are so arranged that from u to 12 they will mark the roll in succession when urged toward it, each cutting the roll slightly deeper than the one following it. Further,when the cutters are urged against the roll by the hand-wheel, so that the tooth a of each has by successive cuts formed a groove of the desired depth, the teeth 0 will just mark the surface of the roll and the intermediate teeth of each cutter form grooves varying in depths from the marks made by the teeth 0 to the fully-formed grooves made by the teeth a. The tools are urged against the hardened surface of the roll by theattendant with caution and by degrees, several cuts being taken before the teeth a have completed their respective grooves, the cutters being all drawn back from the roll after each cut or upward movement of the roll by the rocker g and combined parts, as above described. Now, if after the cutters are urged against the roll until the teeth a of the several cutters have each completed a groove, the indexer be caused to turn the roll on its axis in the direction indicated by the arrow to the amount of the distance between two adjacent grooves, and the roll be then passed again through the cutters, each tooth a will complete the incomplete grooves left by the tooth next to it, which latter tooth in turn will bring to a nearer state of completion the groove left by the next adjacent tooth, to be finished at advance turn of the roll marking out new grooves upon the smooth hard face of the roll. Thus, on account of the number and nearness together of the cutters surrounding a roll the latter has to be indexed and passed through the cutters but comparatively few times to have its whole surface corrugated, each cutter grooving its share or section of the surface. The indexer is brought into use or stopped by allowing the pawl to engage the teeth of the ratchet or turning it back therefrom.

The operation of our corrugatiug-engine is substantially as follows: The roller to be corrugated is placed vertical in the engine, the clamp It and bushing-ring at being first placed upon one stem thereof, which stem, with the ring, is inserted in the cavity of the wormgear, with the end of the roll resting upon the caps of the thrust-bolts 0 The shaft 0, previously raised by means of the hand-wheel S, is brought down to receive the upper end of the other stem ofthe roll, and clamped thereon by means of the nut'T, the clamp is being also tightened upon the lower stem of the roll and confined by the screws t. The pawl of the indexer is thrown back from the ratchet, so as not to turn the roll until required, and the cutters brought to the roll by the hand-wheel and urged forward until theteeth u cut grooves into the roll to the depth required. The pawl is then turned onto the ratchet and the engine left to itself to complete the corrugatiug of the roll without further attention, a belt of common kind running upon the pulley N furnishing the power required. Previous to bringing the cutters to bear upon the roll the twist-bar or guide G is adjusted to give to the corrugations the desired twist or spiral, and the pins (1 and d adjusted to be timely acted upon by the indexing-lever It as it is moved by the plunger, reference being had to the length of the roll to be corrugated. When the roll moves upward past the cutters, the projection of the plunger turns the rocker and draws the cutters back, stops the pumps, and opens the escapevalves for the water. The plunger descends as the water flows from beneath it until the roll passes the cutters,when the projection encounters the lever of the clutch-shifting device and returns the cutters for another cut, closes the outflow-valves, and starts the pumps, the roll being simultaneously indexed for a new cut by the lever of the indexing device encountering the pin d. This operation is continued until each tooth a arrives at the groove formed by the like tooth of the preceding cutter,whcn the corrugations are completed. The cutters being numerous and near together, quickly overtake each others work as the roll turns within them, so that a roll is quickly corrugated, each cutter completing its share of the surface of the same. Time is also saved in corrugatiug a roll with this machine, from the fact that the parts all work automatically, and no time is lost in operating any part by hand. The roll is guided steadily upward and downward in its vertical movements by means of the plunger moving in the cylinder below it and the shaft 0, moving in the guide R above it, and the plunger constitutes a longitudinally and axially movable support or carrier for the roll.

What we claim as our invention is- 1. The cylinder-piece A formed with a cylinder, 0, a horizontal flange at the upper end of said cylinder, and braces G, distributed around said cylinder and extending up to said flange, in combination with supports I, rising from said flange and secured thereto, and lintel K, upheld by said supports, substantially as set forth.

2. The adjustable guides 6 in combination with the tool-frame L, having a central opening, T, the cutters, and the roll-carrying shaft. said guides extending inward toward the roll or other body to be operated on, and consisting ofa horizontal part and araised innerpart,substantiall y as shown.

3. The combination of smooth stationary tubular guide R with shaft 0, sliding longitudinally therein, vertical rack 9, attached to said shaft, and a pinion gearing with said rack, substantially as set forth.

4. The roll carrying shaft 0, in combination with a rack, 9 and the shaft and pinion for operating said rack,the latter moving longitudinally with said shaft, but allowing said shaft to turn while said rack remains stationary, substantially as set forth.

5. The tool-frame L, in combination with brace-rods R, the blocks P, and supports I, and clamping devices for holding said rods, substantially as set forth.

6. The tool-frame L, the blocks P, and supports I, in combination with brace-rods R and clamping devices for holding said rods, the latter being provided with adjustable bearing-point Z,substantially as described.

7. The thrust-bolts 0, arranged under the lower end of the roll and receiving the pressure thereon, in combination with the holders to which they are attached, the reciprocating roll-operating shaft and plunger, and a sup port for said holders, substantially as set forth.

8. Apivotedguide arranged to occupy either avertical or inclined position, in combination with a plunger having an extended part engaging therewith, the frame, and tools, said plunger being capable ofaxial motion, accord ing to the inclination of said guide.

9. The combination,in a power corrugatingengine, of the cylinder and plunger therefor, a worm-gear fitted to turn upon a bearing with the plunger, and a rotating worm, r, for the gear resting in bearings with the plunger, for the purpose specified.

10. A longitudinally and axially movable support for the roll, gearing for turning said support as it rises, a pawl and ratchet for actuating said gearing, a lever moving with said pawl, a stud or rod for engaging and actuating said lever, and an adjustable stop which limits the motion of the latter, said lever having a yielding section to let it pass said rod or stud, substantially as set forth.

11. The tool-stock O of a corrugating-engine, formed with a longitudinal groove, 0, and transverse tongue i, in combination with the cutterf, formed with a longitudinal tongue, n, to fit' the cavity 0 of the tool-stock, and the transverse groove e, to receive the tongue 7 of the tool-stock, and bolts g, to hold. the cutter and tool-stock together, substantially as described.

12. The tool-holder A of a corrugating-engine,and the slotted. ring Fflfitted thereon, in combination with tool-stocks 0, provided with studs or pins a, which are adjustable independently of the said stocks, and operate with the slotted ring, substantially as specified.

13. The tool-stock O of a corrugating-em gine, formed with a cavity, Z", in combination with a stud or pin, a occupyingsaid cavity, an externallythreaded sleeve, r passing through a wall of the cavity, and a threaded bolt, a resting in said sleeve and fitted with a screw-thread to the head of the stud, substantially as and for the purpose specified.

14. A longitudinally and axially movable support forthe roll or work, in combination with gearing for turning said support as it rises, a rod or stud for engaging and actuating said gearing, and a regulator, substantially as set forth, which makes the action of said gearing constant.

15. The tool-frame of a corrugating-engine,. formed .with a slide-block fitted thereon, in combination with a screw-shaftm, fitted thereto, and the toothed block a fitted to the screw-shaft andform ed to move longitudinally upon the slide-block, substantially as shown.

16. In combination with the tool-frame of a carrying-engine, formed with an arm,p provided with a rigid threaded stud, 6 a slideblock provided with a threaded stud, '0 and pinion k fitted to said studs, with a rockerarm engaging with said pinion, for the purpose specified.

17. An arm moving with the roll, in combination with a ring oscillated thereby, con-.

nections between said arm and ring, and a series of cutters engaged by said ring and alternately advanced and withdrawn thereby, substantially as set forth.

18. In a corrugating-engine, the tool-holder A and slotted ring FZfitted thereon, in combination with the tangent-block a which engages with said ring, a tangential movement of said block causing the slotted ring to turn upon its bearing, substantially as described. 19. A tool-holder and series of tool-stocks arranged therein, in combination with an adjustingring for engaging with said stocks to adjust them all simultaneously, and screws bearingragainst the rear of said stocks, re-x spectively, for adjusting any one of the tools independently, substantially as set forth.

20. In a corrugating-engine, a pinion, k formed with stops a in combination with a toothed segment arm or rocker, 5 to turn the 

